MC9S12DG128VPVE Freescale, MC9S12DG128VPVE Datasheet - Page 122
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MC9S12DG128VPVE
Manufacturer Part Number
MC9S12DG128VPVE
Description
Manufacturer
Freescale
Datasheet
1.MC9S12DG128VPVE.pdf
(142 pages)
Specifications of MC9S12DG128VPVE
Cpu Family
HCS12
Device Core Size
16b
Frequency (max)
50MHz
Interface Type
SCI/SPI/I2C/CAN
Total Internal Ram Size
8KB
# I/os (max)
91
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
2.5/5V
Operating Supply Voltage (max)
2.75/5.25V
Operating Supply Voltage (min)
2.25/2.35/4.5V
On-chip Adc
2(8-chx10-bit)
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
112
Package Type
LQFP
Program Memory Type
Flash
Program Memory Size
128KB
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S12DG128VPVE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Device User Guide — 9S12DT128DGV2/D V02.16
The following procedure can be used to calculate the resistance and capacitance values using typical
values for K
The grey boxes show the calculation for f
for f
The VCO Gain at the desired VCO frequency is approximated by:
The phase detector relationship is given by:
i
The loop bandwidth f
typical values are 50. = 0.9 ensures a good transient response.
ch
122
is the current in tracking mode.
OSC
= 4MHz and a 25MHz bus clock.
1
, f
1
and i
f
osc
K
V
C
f
ch
C
should be chosen to fulfill the Gardner’s stability criteria by at least a factor of 10,
from (Table A-16).
=
<
K
refdv+1
K
------------------------------------------
Figure A-3 Basic PLL functional diagram
1
=
1
2
e
–
---------------------- -
+
f
K
i
1
ch
1
f
–
ref
VDDPLL
1
f
f
1V
ref
VCO
vco
+
K
=
V
= 50MHz and f
2
–
100
f
----- -
10
cmp
1
C
C
p
Loop Divider
s
e
Detector
= 316.7Hz/
----------------------- -
Phase
60 50
f
synr+1
C
f
K
–
C
100
ref
1
–
<
R
< 25kHz
= 1MHz. E.g., these frequencies are used
------------- -
4 10
= -90.48MHz/V
f
ref
;
XFC Pin
=
1
2
0.9
Freescale Semiconductor
VCO
K
V
f
vco